DeepSeek Open-Sources 3FS and Smallpond to Redefine AI Infrastructure

By
Lang Wang
5 min read

DeepSeek Unleashes 3FS and Smallpond: The Next Leap in AI Infrastructure?

Breaking Through the AI Bottleneck with DeepSeek’s 3FS and Smallpond

DeepSeek has made a bold move in AI infrastructure by open-sourcing two groundbreaking projects—3FS (Fire-Flyer File System) and Smallpond on the Day 5 of its #OpenSourceWeek. These innovations address fundamental storage and data-processing bottlenecks that have long plagued AI training and inference workloads. While much of the AI race has focused on models and algorithms, DeepSeek is tackling the problem from the ground up, optimizing infrastructure to enable faster, more scalable AI applications.

For investors, developers, and enterprise AI strategists, the significance of this release extends far beyond yet another open-source contribution. 3FS and Smallpond signal a shift in how AI companies will build, deploy, and monetize their technologies. Let’s break down what makes these tools unique, their potential impact, and what this means for the future of AI infrastructure.


3FS: A Distributed File System Designed for the AI Era

Why Traditional Storage Fails AI at Scale

The explosive growth of AI models has pushed traditional storage architectures to their limits. Training large-scale models requires rapid data retrieval, massive parallel processing, and seamless checkpointing. Conventional file systems struggle to keep up, resulting in wasted computational power and increased costs.

DeepSeek’s 3FS directly addresses these challenges with a high-performance, disaggregated storage solution designed for AI workloads. Unlike legacy storage solutions that couple storage with compute, 3FS adopts a locality-oblivious design. This enables AI applications to access data across thousands of SSDs and storage nodes without the overhead of data locality constraints.

Key Innovations in 3FS

  • High Throughput & Scalability: In stress tests, 3FS delivered a peak read throughput of 6.6 TiB/s on a 180-node cluster, setting new performance benchmarks for AI-centric file systems.
  • Strong Consistency for Reliable Training: Chain Replication with Apportioned Queries ensures AI models can train without unexpected data inconsistencies, reducing debugging time and improving reliability.
  • Optimized for AI Workloads:
  • Dataloader Integration: Eliminates the need for manual dataset prefetching, accelerating training times.
  • Checkpointing Efficiency: Supports high-throughput checkpointing to avoid idle GPU cycles.
  • KVCache Optimization: Provides a cost-effective alternative to DRAM-based inference caching, increasing efficiency for LLMs.
  • Multi-Engine KV Store: 3FS supports MemDB (in-memory cache), LevelDB (persistent storage), and RocksDB (high-performance scalable storage), allowing organizations to tailor their storage approach based on workload needs.

Investor Takeaway: AI compute is expensive, and wasted processing power due to inefficient storage is a multi-billion-dollar problem. 3FS offers a direct solution, making AI training more cost-effective and scalable. Companies optimizing AI training and inference pipelines will likely see rapid adoption of 3FS, potentially creating new investment opportunities in AI infrastructure startups.


Smallpond: Lightweight, High-Performance Data Processing

The Role of Data in AI Scalability

AI models are only as good as the data they process. Large-scale data preparation, transformation, and analysis have traditionally required heavyweight frameworks like Apache Spark, which introduce complexity and operational overhead. Smallpond offers a compelling alternative—a lightweight, DuckDB-powered framework designed for massive AI datasets without the burden of complex infrastructure.

What Makes Smallpond Stand Out?

  • Built for PB-Scale Datasets: Handles petabyte-scale AI datasets efficiently without requiring long-running services.
  • Seamless Integration with 3FS: Leverages the same storage backend, ensuring optimal performance and scalability.
  • Efficient Sorting & Transformation: Demonstrated by sorting 110.5 TiB of data in just 30 minutes, achieving an average throughput of 3.66 TiB/min using the GraySort benchmark.
  • Pythonic Simplicity: Unlike heavyweight data engines, Smallpond offers an intuitive Python API, reducing the learning curve for AI developers.

Investor Takeaway: Data processing inefficiencies are a hidden cost in AI operations. Smallpond’s lightweight, scalable approach could disrupt traditional ETL (Extract, Transform, Load) workflows in AI, providing a valuable alternative to existing enterprise solutions.


DeepSeek’s Strategy: Open-Source as an AI Infrastructure Play

Why Open-Source?

While OpenAI and Anthropic are doubling down on closed-source strategies, DeepSeek is playing a different game—open-sourcing foundational AI infrastructure to build an ecosystem that accelerates innovation, attracts talent, and fosters community adoption.

The Business Case for Open-Sourcing 3FS and Smallpond

  • Ecosystem Lock-in Without Proprietary Barriers: Companies that build on 3FS and Smallpond become part of DeepSeek’s ecosystem, increasing its long-term influence in AI infrastructure.
  • Acceleration of Internal AI Development: By leveraging its own high-performance storage and data frameworks, DeepSeek can iterate faster than competitors reliant on third-party solutions.
  • Monetization Through Services & Enterprise Support: While the core technologies are open, DeepSeek could monetize through managed services, cloud-hosted versions, or enterprise support contracts.

Investor Takeaway: Open-source infrastructure plays can be highly lucrative when executed correctly. Red Hat’s success in enterprise Linux and Databricks’ dominance in big data illustrate how open platforms can evolve into billion-dollar businesses. DeepSeek’s strategy positions it as a potential leader in AI infrastructure, offering a strong counterpoint to proprietary AI companies.


Final Thoughts: Why This Matters for the Future of AI

DeepSeek’s open-source release of 3FS and Smallpond is more than just a technical milestone—it’s a statement about the future of AI infrastructure. As AI models become more complex and data-intensive, the industry needs scalable, cost-effective solutions for storage and processing. 3FS and Smallpond provide a blueprint for the next generation of AI infrastructure—one that prioritizes efficiency, scalability, and accessibility.

For enterprises investing in AI, adopting 3FS and Smallpond could significantly cut infrastructure costs while improving training and inference speeds. For investors, the rise of open-source AI infrastructure presents opportunities in new SaaS models, managed AI services, and next-gen cloud platforms.

Key Takeaways:

  • 3FS eliminates storage bottlenecks in AI training and inference, potentially reducing AI infrastructure costs at scale.
  • Smallpond simplifies massive AI data processing, offering an efficient alternative to traditional ETL pipelines.
  • DeepSeek’s open-source strategy positions it as a long-term leader in AI infrastructure, following the playbook of Red Hat and Databricks.
  • The shift toward AI-native infrastructure solutions is accelerating, creating new investment opportunities beyond just AI models.

What’s next? If DeepSeek continues on this trajectory, we may see further infrastructure-level innovations in AI networking, model optimization, and hardware acceleration. For now, 3FS and Smallpond have set a new standard for how AI companies should approach their backend architecture.

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